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38 lines
1.5 KiB
Diff
38 lines
1.5 KiB
Diff
From 3b1fe146746b93011b0a7bab56281160f6461cd1 Mon Sep 17 00:00:00 2001
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From: Mike Primm <mike@primmhome.com>
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Date: Wed, 16 Jan 2013 15:27:22 -0600
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Subject: [PATCH] Alternate, sync-free-but-safe chunk reference cache
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---
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src/main/java/net/minecraft/server/World.java | 14 ++++++--------
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1 file changed, 6 insertions(+), 8 deletions(-)
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 1e36467..e2426bc 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -297,15 +297,13 @@ public abstract class World implements IBlockAccess {
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// CraftBukkit start
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public Chunk getChunkAt(int i, int j) {
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- Chunk result = null;
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- synchronized (this.chunkLock) {
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- if (this.lastChunkAccessed == null || this.lastXAccessed != i || this.lastZAccessed != j) {
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- this.lastChunkAccessed = this.chunkProvider.getOrCreateChunk(i, j);
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- this.lastXAccessed = i;
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- this.lastZAccessed = j;
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- }
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- result = this.lastChunkAccessed;
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+ //synchronized (this.chunkLock) {
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+ Chunk result = this.lastChunkAccessed; // Exploit fact that read is atomic
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+ if (result == null || result.x != i || result.z != j) {
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+ result = this.chunkProvider.getOrCreateChunk(i, j);
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+ this.lastChunkAccessed = result; // Exploit fact that write is atomic
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}
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+ //}
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return result;
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}
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// CraftBukkit end
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--
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1.8.1-rc2
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